TOOGOO(R) 4 Pcs 1" Plastic Wheel Rectangle Top Plate Fixed Swivel Caster Set Wheel Size: 1" x 0.5" (D*H) Holes Diameter : 0.19" Top Plate Size: Swivel Caster: 1.5" x 1.3" x 0.04" Fixed Caster: 1.4" x 0.8" x 0.04" (L*W*T) Total Height: Swivel Caster: 3.8cm / 1.5"